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[IEEE 2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management ( HNICEM ) - Laoag, Philippines (2019.11.29-2019.12.1)] 2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management ( HNICEM ) - Voltage Characterization of Magnesium-doped Zinc Oxide by Electrodeposition Method for Solar Photovoltaic (PV) Cells
摘要： The research paper adapted the study of Rajpal and Kumar (2016). The Magnesium (Mg)-doped Zinc Oxide (ZnO) was prepared using the electrodeposition method. The samples obtained from the experiment were then collated to observe the photoconductivity value and the percentage of Voltage Regulation of the plates. Three (3) different tilt angle orientation were utilized in gathering the data of the Voltage Regulation percentage (%VR) and photoconductivity. The photoconductivity value acquired from the undoped plate is 0.7083 while, for the doped plates are 0.8438V, 0.6897V and 0.7204V. On the other hand, the %VR acquired for 0?, 13? and 20° were 1.283%, 5.820% and 3.456%, respectively. Moreover, the percent Battery Charge collated from the experiment are 0.39%, -1.20% and 1.11%, respectively. Further, the experiments showed that sun exposure and temperature have a significant impact on the electrical conductivity and output of the cells.
关键词： electrodeposition,tilt angles,Magnesium-doped,zinc oxide
更新于2025-09-23 15:21:01
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Degradation of Mg-doped zinc oxide buffer layers in thin film CdTe solar cells
摘要： Cadmium Sulphide is the conventional n-type bu?er layer used in thin ?lm Cadmium Telluride solar cells. It is well known that Cadmium Sulphide causes optical losses and sulphur di?uses into the absorber during high temperature activation. Sputter-deposited Mg-doped ZnO (MZO) has been shown to be an attractive bu?er layer for Cadmium Telluride solar cells due to its transparency and tuneable band gap. It is also stable to high temperature processing and avoids di?usion of elements into the cadmium telluride absorber during the cadmium chloride activation treatment. However, degradation is observed in solar cells incorporating MZO bu?er layers. Analysis of the MZO ?lm surface potential has revealed signi?cant ?uctuations in the thin ?lm work function once the layer is exposed to the atmosphere following deposition. These ?uctuations are attributed to the high reactivity to water vapour of the MgO contained in the MZO ?lms. This has been analysed using X-ray Photoelectron Spectroscopy to determine corresponding changes in the surface chemistry. The Zinc Oxide component is relatively stable, but the analysis shows that MgO forms a Mg(OH)2 layer on the MZO surface which forms a secondary barrier at the MZO/CdTe interface and/or at the interface between MZO and the Fluorine-doped SnO2. This a?ects the Fill Factor and as a consequence it degrades the conversion e?ciency.
关键词： Surface contamination,Degradation,Thin ?lm solar cells,Cadmium telluride,Magnesium-doped zinc oxide,Hydroxide,Bu?er
更新于2025-09-11 14:15:04